The boss of the Citizens Advice Bureau (CAB) has warned that the service could be devastated by a series of cuts.
CAB chief executive Gillian Guy said cuts of up to 45% could be made as local authorities reduce their budgets.
Local authorities provide the majority of funding for the legal, welfare and debt advice service which also receives some funding from central government.
Gillian Guy told the BBC: "If we add up all the cuts potentially coming our way they could amount to as much as 45% of our funding and that's quite devastating."
The impending cuts could see a number of CAB centres close down across the country.
Earlier this week the service warned that five sites may close in Birmingham.